Two-stroke engines have their uses, but they are seen as environmentally unfriendly today. But why do they have that reputation, and is it deserved?

If you already have a Chevy TPI unit from either a Corvette or a Camaro, DFI will sell you the pieces you need to make the system operational in virtually any street machine or rod. The pieces include ...

A quick look around is all you need to think the two-stroke engine is dead. Exhaust smokers no longer brapp their way past outdoor cafés or over twisty mountain passes. You don't even see two-strokes ...

KTM 250 EXC TPI and KTM 300 EXC TPI become world’s first fuel-injected 2-stroke off-road motorcycles to be manufactured for the masses KTM, the Austrian bike manufacturer, has unveiled two bikes - the ...

The question of which is better, carburetion or fuel injection, really comes down to cost versus performance. Overall, more torque can usually be produced by a longer ...

The 2021 model of the KTM 150 XC-W TPI is nothing short of an amazing cross-country racer from the off-road design department. The Austrian manufacturer engineered it to be extremely lightweight, but ...

You love late-model muscle cars, but do you understand what makes them tick? Do you know why your '10 Camaro SS not only has more power than equivalent cars of the '60s, but also with vastly better ...